Stamping or punching machine.



No. 687,779. Patented Dec. 3, I90". F. I11. PIERPONT.

STAMPING 0R PUNGHING MACHINE.

(Application filed June 5, 1901. (No Model.)

I2 Sheets-Sheet 2.

Patented Dec. 3, I901.

l2 Sheets-Sheet 3.

F. u. PIERPONT. STAMPING 0R PUNCl-IING MACHINE. (Application filed Jun e5, 1901.) (No Model.)

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No. 687,779. Patented Dec. 3, 19m.

F. H. PIER'PONT.

STAMPING 0B PUNCHING MACHINE.

(Application filed June 5, 1901.)

(No Model.) l2 Sheets-Sheet 4.

a I AW m: NORRIS PETERS co. mo'mumn. \VASHINGTOH, n. c.

No. 687,779. Paten ted Dec. 3, l90l.

r. H. PIERPONT.

STAMPING 0R PUNGHING MACHINE.

(Application filedj'une 5, 1901.)

I2 Sheets-Sheet 5.

("0 Model.)

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N0. 637,779. I Patented D86. 3, I901. F. H. PIERPUNT.

STAMPING 0R PUNGHING MACHINE.

(Application filed June 5, 1901.)

I2 Sheets-Sheet 6.

'(m Model.)-

THE nonms PETERS cu, Pnovouwcu 'vmsnmm'rmpv c.

Patented Dec. 3, H011.

F. H. P'IEBPUNT.

STAMPING 0R PUNCHING MACHINE.

(Application filed. June 5, 1901.)

I2 Sheets-Shae! 7.

' (No Model) m: Nonms Pztzfls no. mum-urns" \NASHINGYON. a. r.

No. 687,779. Patented Deb. 3, 190a;

F. H. PIERPONT. STAMPING DR PUNGHING MACHINE.

. (Application file; June 5, 1901.) I (No Model.) l2 Sh eets-.Shee't l0.

- Patented Dec. 3, l90l..

F. H. PIERPONT.

STAMPING 0R PUNCHING MACHINE.

(Application filed June 5, 1901.)

I2 Sheets-Shaat II.

(No Model.)

No. 687,779. Patented Dec. 3, 1901."

F. H. PlEBP-ONT.

STAMPING 0R PUNCHINB MACHINE.

(Application filed June 5, 1901.)

I2 Sheets-Sheet l2.

(Nu Madel.)

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FRANK HINMAN PIERPONT, OF I-IORLEY, ENGLAND, ASSIGNOR TO LANSTONMONOTYPE MACHINE COMPANY, OF WVASHINGTON, DISTRICT OF COLUM- BIA, ACORPORATION OF VIRGINIA.

STAMPING OR PUNCHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 687,779, dated December3, 1901.

Application filed June 5, 1901. Serial No. 63,280. (No model.)

To aZZ whom it may concern:

Be it known that I, FRANK I-IINMAN PIER- PONT, a citizen of the UnitedStates, residing at Horley, in the county of Surrey, England,

have invented certain new and usefulImprovements in or Relating toStamping or Punching Machinery; and I do hereby declare the following tohe a full, clear, and ex act description of the same, reference beinghad to the accompanyingdrawings, forming a part of this specification,and to the letters of reference marked thereon.

This invention relates generally to stamping or punching machinery, butspecifically to a machine for producing matrices such as are used intype casting and setting machines of the Lanston monotype order.

The object of the invention is to provide a machine which at eachrevolution shall produce from a metal blank a matrix of definitedimensions with its character properly justified as to alinement, sidespaces, and flatness of face, with the axis of its locating cone-holeexactly coincident with the longitudinal axis of the matrix and with thematerial of which the matrix is composed compressed, so as to render itdense and hard.

In the accompanying drawings, Figure 1 is a front view of the complete'machine, the die-holder being in its raised position and the transferrerin its first position-that is, with its blank-holder over thestamping-chamber and its matrix-holder in line with the delivery-- race.Fig. 2 is a section on the line 2 2 of Fig. 1. Fig. 3 is a section onthe line 3 3 of Fig. 1, but with the die-holder in its lowered positionand the transferrer in its second or inoperative position. Fig. 4 is asimilar sec tion to Fig. 2, but showing the transferrer in its thirdpositionthat is, with the blankholder in position to receive a blankfrom the feed-race and the matrix holder over the stamping-chamber. Fig.5 is a side elevation, partly in section, of the central part of themachine, showing the stamping chamber transferrer and its operativemechanism. Fig. .6 is a similar front elevation. Fig. 7 is a sideelevation similar to Fig. 5, but showing the parts in differentoperative position. Fig. 50 Sis asection on the line 8 8 of Fig. 7. Fig.9

is a similar section, but showing the parts in different operativepositions. Fig. 10 is a sectional detail showing the transferrersoperative gear. Fig. 11 is a section on the line 11 11 of Fig. 2,showing the feed-galley and its catch. Fig. 12 is a side View, partly insection and partly in elevation, showing the die-holder and thetransferrer to illustrate the method of placing a new die in the holder.Figs. 13 and 14 are side elevations of the trans- 6o ferrer detached,showing the blank and matrix holders, respectively.

Like letters indicate like parts in all the figures.

The machine is carried on a standard, as shown in Fig. 1, and has a mainframe A, on the upper part of which is carried a reciproeating stamp A,in which the die-holder B is fixed. The mechanism for reciprocating thestamp forms no part of this invention and need not therefore beparticularly described in this specification. It may be of any usual orapproved construction, and in the example illustrated its movements arecontrolled by a tripping-lever A the raising of which allows the stampto make one revolution, the lever being caught and held at the end ofeach revolution by a safety-catch A The catch A is formed on the end ofa 7 vertical extension of an arm K fixed on one end of a rocking shaftK, Figs. 1, 2, 3, and 4, which is carried in a sleeve K, fixed on themachine-frame. The other end of the rockshaft is also provided with ahorizontal arm having a vertical extension ending in a cap K. This capis adapted to be depressed by meanshereinafter described, so as to rockthe shaft K and withdraw the catch from lever A A spring K is provided,which normally holds the catch in engagement with the lever, and thehead of the catch is inclined or curved, Fig. 1, so that as the leverdescends it presses back the catch andis automatically engaged by thesame. A stud K on the arm K maybe provided, engaged in a slot in a 5 abracket K (fixed on the machine-frame) to limit the movement of thecatch under-the pressure of the spring.

The die B, Figs. 5, 6, and 7, is held in a die-holder 13, whichreciprocates in a guideway A in the upper portion of a block A bolted onthe main frame, and beneath the die B is the stamping-chamber O, theexact size in cross-section of the matrix when stamped, said chamberbeing formed in a hardened-steel block preferably cylindrical, let intothe lower portion of the frame-block A The frame-block is bored outbeneath the stamping-chamber to receive the enlarged head 0 of a movablerod 0 which extends down through the frame, Fig. 7. The head C rests ona hardened-steel ring (J and has inserted in it the base of .aconical-headed punch G which forms the floor of the stamping-chamber andalso acts as an ejector for the matrix after being stamped, the rod 0being reciprocated for this purpose, as hereinafter described. The rod 0is also preferably bored out centrally to enable the punch C to bereadily removed from the head 0* should it become necessary to changethe same.

In front of the stamping-chamber O and carried as a working fit in theblock A is a pin D, onto the bottom of which is pinned a toothed segmentD, Figs. 5 and 10. Attached to this segment D is one end of a coiledspring D carried in a recess in the block A above the segment and soarranged that it tends to move the segment in the direction of the arrowmarked on the segment in Fig. 10.

I Fixed onto the top of the pin D, preferably by means of a taper pin Dis a member, which we call the transferrer, comprising a body E and twoarms E and E extending from the body at right angles to each other andin which are placed the blank-holder and the matrix-holder,respectively.

One side of the arm E is seen in full elevation in Fig. 12 and partlybroken away in Fig. 5. Fig. 13 is an elevation showing the other side.The arm is best seen in plan in Figs. 2 and 4-.

In the free end of the arm E is a vertical rectangular hole of the samecross-section as a matrix-blank, of which the upper portion is occupiedby a toothed rack E At the lower portion the end wall of the arm is cutaway, leaving a three-walled chamber or blank-holder E, open in frontand at the bottom and with a projecting portion E of the arm above it,Fig. 5. A stud E Figs. 2, 12, and 13, under pressure of a spring Eprotrudes slightly through one wall of the holder, Fig. 4, with forcesufficient to hold a matrixblank from falling out when placed within theholder, and for a purpose hereinafter described a portion of the wallbelow the stud is cut away, as shown in Fig. 13.

Behind the rack-cham her the arm E is slotted and partly cut away toreceive a gearwheel E engaging with the teeth of the rack E and with atoothed segment E the latter pivoted in the wall of the arm and providedwith a handle E On one side of the segment E is a pin E, which normallyengages a spring-controlled pin E being held against the same by acoiled spring E one end of which is attached to the handle E, the otherto the Wall of the blank-holder arm. The rack E and the handle E arethus normally held in the positions shown in Fig. 5, in which the lowerend of the rack is in contact with the top of the matrix-blank in theblankholder. Depressing the handle E forces the blank out of the holderinto the stampingchamber (3.

The handle E is provided with a pin E, which when the transferrer is inthe normal or first position engages on the depression of the handlewith the cap K before described, depressing the same and rocking theshaft K, so as to liberate the tripping-lever A from the safety-catch.

The pin E is carried in a casing E fixed partly on the arm E and partlyon the body E, and is normally held in the forward position, as shown inFigs. 4 and 5, by a spring, but is provided near its head with an offsetor key E which retains it in a position free of the pin E when drawnback and partly revolved, as shown in Fig. 12.

Fixed onto the right-hand side of the machine-frame is a feeding-race F.(Shown in plan in Figs. 2 and 4: in side View, partly broken away, inFig. 6, and in end view in Fig. 11.) It consists of a channel F, inwhich the blanks are held as an easy fit in a vertical position. Thewalls of the race are continued upward above the matrices to form adovetailed guide in which works a slide F with which is connected apushing-block F the end of which engages the hindmost of the blanks inthe channel. The slide F is provided with a cord F carried overguidingwheels F F andhavingaweight F suspended to its end, so as to pullit with steady pressure toward the inner end of the channel and drivethe blanks out of the same. This is prevented by a stop F Figs. 2 and11, forming the end of a pin F movably carried in a guide F and normallyheld in front of the race-channel by the pressure of a spring F As shownin Figs. 2 and 11, the stop is smaller than its pin, forming on it ashoulder F The feed-race F is so placed relatively to the transferrerthat when the latter is placed in the position shown in Fig. 4 theblankholder E of its arm E is brought directly opposite the end of thechannel F, and in swinging around into that position its wall hasengaged the shoulder F and forced the stop F against the pressure of itsspring away from the front of the channel, so that the last blank in thechannel is driven into the holder. It will be remembered that the bottomof the wall of the holder is cut away, as shown at E Fig. 13, so as notto engage the stop F itself, which therefore directly follows up theblank in the holder when the transferrer is returning to its normalposition and is again placed in front of the last blank in' the channelbefore the transferred feed-channel-the other arm E has itsmatrix-holder directly over the stamping-chamber, and when thetransferrer is in normal position, as shown in Fig. 2, the matrix-holderis in line with a channel G of adeliveryrace G.

Secured onto the end of the delivery-race G is a block G Fig. 6, boredout longitudinally to receive a movable pin G fixed onto which or formedintegraltherewith is a pusher G (seen in end view in Fig. 12,) engagedin a slot in the block and of which the head Gr lies in a recess of thesame, which recess forms a continuation of the race-channel G. Theposition of the pusher-head G in the slot (see Figs. 5 and 6) isdetermined by a cam D formed on or fixed to the pin D, on which thetransferrer is carried, the movable pusher-pin G3 being held in contactwith the cam-curve by a spring G.

A spring-controlled catch G is carried in a slot in one of the sidewallsof the race G. The front surface G of the catch-head corresponds withone of the walls of the racechannel G, and a beveled surface G9 isprovided on its end. Normally the head is held in its most forwardposition, determined by a set-screw G as shown in Figs. 2 and 3.

The matrix-holder, Fig. 14, is a vertical slot E formed in one side ofthe transferrerarm E Preferably for constructional purposes it is formedin a block separate from the arm E and fixed thereto by screws, as shownclearly in Fig. 4. The matrix is held in the holder by one or two studsE, which protrude slightly into the holder under spring pressure. Theend of the arm E has a slot E, Fig. 14., cut deep enough to remove partof the outer side wall of the matrix-holder. This slot receives the headof the catch G A second slot E starts from the inner side wall of theholder. This-slot receives the matrix pusher-head G The transferrer,with the pin D, is arranged to oscillate and to be arrested in threefixed positions. The normal or first position is shown in Fig. 2 whenthe machine is at rest, the die B at the top of its stroke, theblankholder over the stamping-chamber, and the matrix-holder in linewith the delivery-race. The second position is shownin Fig. 3. Thisposition is assumed during the beginning of the downstroke of the dieand maintained until shortly after the commencement of the upstroke. Inthis position both arms of the transferrer are removed from under thedie. The third position is shown in Fig. 4. It is assumed about themiddle of the upstroke, by which time the die is raised sufliciently toallow of the transferrer-arm F. passing beneath it. In this posit-ionthe blank-holder is in line with the feed-race and the matrix holder isover the stamping-chamber. It is maintained until the die reaches thetop of its stroke, when the transferrer flies back to the normal orfirst position. v

The mechanism for oscillating the transferrer is operated by the stampA, in which the die-holder is fixed, and is shown in Figs. 5, 7, 8, 9,and 10.

It will be remembered that on the bottom of the pin D is fixed a toothedsegment D,

Fig. 10. This segment engages a toothed ring D free to revolve in arecess in the bottom of the block A, and this ring engages with theteeth of a second segment 1D, movably carried on the enlarged end D of arod D which works in a guiding-chamber in the block A and has its upperend secured onto the stamp A, so as to reciprocate with the die and itsholder. Formed in the enlarged portion D of the rod D is a cam-groove.(Best seen in Fig. 8.) Looking at this figure it is seen that the camhas a vertical portion D ending in an oblique portion D a horizontalportion 1), forming the bottom of the cam, continued upward by avertical portion D which joins the vertical portion D by an obliqueportion 1). Fixed in the back of the segment D is a pin having a conicalhead D flv'liich engages in the cam-groove. A shunt-block D is placed inthe vertical groove D where the oblique groove D branches oif to directthe pin D into the oblique groove when descending from the top of thevertical groove. This shunt is best seen in Fig. 7 and consists of ablock D carried on a hollow arm D sliding in a guiding-recess andcontrolled by a spring D and pin D so as to be normally protruded intothe cam-groove. The lower surface of the block is beveled and the uppersurface shaped to receive direct vertical pressure from the descendingpin. The pin and cam are so arranged that at the commencement of .a downstroke of the die, and consequently of the rod D the pin D is in theright-hand corner of the horizontal groove D, as shown in Fig. 9, andthe transferrer is in normal position, as shown in Fig. 5. As the roddescends the pin enters the oblique groove D turning the segment andwheel-gear into the position shown in Fig. 10 and rotating the pin 1),thereby placing the transferrer in the second position. As the roddescends farther the pin meets the beveled surface of the shunt, pushesthis back into the recess, and passes to the top of. the verticalgroove, as shown in Figs. 7 and 8. As the rod ascends the pin isdirected by the upper surface of the shunt-block into the obliqueportion D of the cam-groove and the transferrer is moved into its thirdposition, in which it continues until the pin has reached the bottom ofthe shorter vertical groove D. The two oblique movements of the camabove described have been in opposition to the tension of the spring Dwhich, it will be remembered, tends to pull thesegmerit-D in thedirection of the arrow in Fig.

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10. Directly therefore the pin enters the left hand of the horizontalgroove the spring, being now free to act, revolves the segmental gearand returns the transferrer to the first or normal position.

It will be remembered that the conical punch 0, carried on the rod Cforms the floor of the stamping-chamber and also acts as thematrix-ejector therefrom. It is reciprocated for this purpose by thefollowing mechanism, (shown in Figs. 7, 8, and 9:) On the end of the rod0 is fixed a backwardlyextending bar 0, ending in a vertical arm havingtwo offsets 0 adapted to engage a pair of gripping-hooks C pivoted ontothe lower end of the rod D The hooks are normally held closed by springsC, but are each provided with an arm G which engages with a stop C inthe frame and forces them suddenly apart shortly before the die reachesthe top of its stroke. A hollow pin 0 working in a recess in the frameunder the control of a coiled spring 0 returns and holds the rod C andwith it the punch G in their lowest position, directly the gripping-hooks are opened. The gripping-hooks C are adapted to engage theoffsets C synchronously with the matrix-holder of the transferrer beingplaced over the stamping-chamber and to release the same directly thematrix has been placed within the holder.

A handle H is fiXed-s'ay by a screw H- onto the head of the transferrercarrying pin D.

The operation of the machine is as follows: The. channel F of thefeed-race is filled with blanks X, in each of which the locatingconehole has already been approximately formed. The machine is in itsnormal position, the die being at the top of its stroke and thetransferrer with its blank-holder over the stamping-chamber, Fig. 2. Itwill be remembered that in this position the pin D of thetransferrer-oscillating gear is at one end of the horizontal portion Dof the cam-slot and held there by tension of the spring D The operator,therefore, by pulling the handle H toward the left, Fig. 2, can bringthe trans ferrer into the third position, Fig. 4. The blank-holderreceives a blank from the race, and on the operator releasing the handleH the spring D returns the transferrer to the first position, Figs. 2,5, 6, and 9. The handle E is now depressed. The rack E drives the blankX from the holder into the stamping-chamber, and at the same time thehandle-pin E rocking the shaft K, releases the tripping-lever, and thedie commences its downstroke. The handle E is immediately released, andthe rack and handle return to normal by the action of the spring E. Thetransferrer gear-pin D immediately engages the oblique section D of thecam-slot, and the transferrer is placed in its inoperative position,Fig. 3, so that both arms are clear of the descending die. The diecompletes its downstroke and enters the stampinges'in'ze chamber 0,stamping the blank. The body of the die B is shaped in cross-section soas to form a working fit in the stamping-chamberG and projects beyondits holder, so that a portion of its body is within the stampingchamber,as shown in Fig. 7, during the operation of stamping. The blank is thusentirely surrounded by retaining and compressing walls during the wholeof the stamping operation. The die now commences to ascend, and as soonas it has risen sufficiently to clear the transferrer-arm E the pin Dengaging the oblique section D of the camslot the transferrer is againshifted into its third position, as shown in Fig. 4, and theblank-holder receives a fresh blank from the feed-race, while thematrix-holder is brought over the stamping-chamber. The die completesits upward stroke, and while this is being done, the pin D being engagedin the vertical section D of the cam-slot, no movement is given to thetransferrer. The gripping-hooks C however, which during the downwardstroke of the die were brought below the offsets O", as shown in Fig. 8,now engage these ofisets, raising the rod 0 and with it the conicalpunch 0 driving the ma trix X out of the stamping-chamber into thetransferrer-holder. Directly this is done and before the (lie hascompleted its upward stroke the arms 0 of the gripping-hooks engagingthe stops 0, Fig. 9, the hooks release the offsets O and the punch C isreturned to normal by the action of the spring 0 On the die completingits upward stroke the transferrcr gear-pin D enters the horizontalsection D of .the cam-slot and the transferrer returns to normalposition, placing a fresh blank in position under the die, while thetripping-lever rengages with the safety-catch. At the same time thematrixholder is placed in posit-ion shown in Fig. 2, placing the matrixX in line with the delivery-race. In being swung into this position thematrix engages the beveled surface G on the end of the spring-catch Gpushing the catch back. Directly the matrix has passed the catch thelatter under its spring-pressure resumes its normal position, so thatits front edge G is behind the matrix, as best shown in Fig. 2. At thesame time the pusher-head G has entered the slot E of the matrixholderand is therefore in contact with the matrix held therein. When,therefore, at the commencement of a further operation thetransferrer-arm E is moved away from the delivery-race, the matrix isprevented from moving with'it by the spring-catch G and at the same timethe cam D advancing the pusher G its head drives the matrix into thedelivery-race out of the road of the next matrix.

It is desirable that the matrix-stamping dies should be quickly andreadily placed in and removed from the holder. For this purpose thedie-holder B is provided with a block B in which the chamber for the dieis formed,

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and this chamber is furnished with an ejecting-rod B having an enlargedhead 13, which is held in its lowermost position by a spring 13. Forconvenience of construction the dieholder may be bored throughout itswhole length to receive the spring, a rod B being placed above it, asshown in Fig. 7. The end B of the die-holder B is fixed in the plunger Aby means of a screw B The blank-holder arm Eot the transferrer isemployed to place the die in its chamber. The rack E is lowered into theposition shown in Fig. 12 and the die B placed above it. The handle E isthen raised into the position shown in dotted lines in Fig. 12, pushingthe die into its chamber against the pressure of the spring B The die isthen secured by the set-screw B (Shown in Fig. 6.) To remove the die, itis only necessary to loosen this set-screw, when it is ejected by thespring acting through the rod 13 To enable the handle E to be raised, asshown in Fig. 12, it is necessary that the pin E should pass below thepin E and itis for this purpose that the latter is provided with thedraw-back and holding arrangements previously described.

It is evident that if it be desired to stamp matrices without a locatingcone-hole the coned portion of the punch C may be dispensed with, itsupper surface forming a flat floor to the stamping-chamber.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is-- 1. In a matrix-stamping machine such asdescribed, the combination with a die operating in conjunction with astamping'chamber, of an oscillating member provided with a blank-holderfor presenting the blank and a matrix-holder for removing the completedmatrix, substantially as described.

2. In a stamping-machine the combination with a reciprocating die,astamping-chamber,

a feed-race and a delivery-race, of an oscillating member whichtransfers a blank from the feed-race into the stamping-chamber andcarries the blank after being stamped to the delivery-race,substantially as described.

3. In a stamping-machine, the combination with a reciprocating die,astampingchamber, a feed-race and a delivery-race,-of an oscillatingmember having a blank-holder and a matrix-holder the movements of themember being controlled by a cam moving synchronously with thereciprocating die, substantially as described.

4. In a stamping-machine, the combination with the die andstamping-chamber, of an oscillating member having a blank-holder and amatrix-holder, the member being placed and held in the three specifiedsuccessive positions during each reciprocation of the stamping-die,substantially as and for the purpose described.

5. In a stamping-machine, the combination with a compression or stampingchamber, a

die or plunger reciprocating therein, and an ejector forming the floorof the compression chamber, of an actuating mechanism-for said ejectormoving in unison with the plunger and provided with an automatic catchand trip, whereby the ejector is engaged and released during the backstroke of the plunger; substantially as described.

6. In a stamping-machine, and in combination, a stamping-chamber Chaving fixed side Walls, a reciprocating die B which enters and formsthe top wall of the chamber, an ejecting-rod which forms the floor ofthe chamber, and an oscillating member having a blankholder and amatrix-holder; substantially as described.

'7. In a stamping-machine the combination with a stamping-chamber,-ot anoscillating member having a blank-holder with a springcontrolledstudsuch as E a rack-such as E -and mechanism to raise and lower therack-such as toothed wheel E toothed segment E and handle E themechanism be ing held in normal position by a springsuch as El -andpinsnch as E-- engaging a stop; substantially as described.

8. In a stamping-machine, the combination With the laterally-movableblank-holder provided with a discharging membersuch as bar E and anactuating-lever therefor of a spring-controlled stop-pin provided with acatch for holding it in retracted position; substantially as described.

9. In a stamping-machine the combination with an oscillating memberhaving a blankholder, of a feed-race with a spring-controlled stophaving a shouldersuch as F adapted to engage the blank-holder,substantially as described.

10. In a stamping-machine the combination with an oscillating memberhaving a matrix-holder, of a delivery-race and a springcontrolled catchhaving surfaces-such as G G -each adapted to engage the matrix ineffecting the removal of the same from the holder; substantially asdescribed.

11. In a stamping-machine the combination with an oscillating memberhaving a matrix-holder provided with a seatsuch as slot E of adelivery-race, and a pusher-such as G G -adapted to engage in the slot,the pusher beingactuated byaspringandacamsuch as D m0ving with theoscillating member, substantially as described.

12. In a stamping-machine, the combination with an oscillating blank andmatrix-carrier fixed on a pin having a toothed segment and a spring, ofan actuating-cam adapted to reciprocate in unison with the stamp-plumger, a pin engaged by the cam and fixed on a toothed segment and atoothed ring engaging both segments; substantially as described.

13. In a stamping-machine, the combination with a stamping-chamber, andan ejector, carried on a rod the latter having an arm such as C -withoffsets C of a rod adapted to reciprocate with the stamp-plunger and.

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having catch-hooks--such as C O --which engage the offsets and raise theejector during a portion of the upward stroke of the plunger, and aspring-such as C which returns the ejector to normal position when theoffsets are released from the catch-hooks; substantially as described.

14:. In a stamping-machine, the combination with the plunger,stamping-chamber and ejector, of an automatic blank-transferrercontrolled in its movements by the plunger and provided with ablank-holder and a matrix-holder, the one for delivering to and theother for receiving from the stamping-chamher, a blank-ejector for theblank-holder, and means connected with said blank-ejector for actuatingthe starting-lever for the plungeroperating mechanism; substantially asdescribed.

15. In astamping-machino and in combination with the starting-leverthereof, a blankholder provided with means for delivering the blank tothe compression or stamping devices and for actuating saidstarting-lever; substantially as described.

10. In a stamping-machine the combination with the stamping mechanism,including plunger and stamping-chamber, of a feed.- race, a blank-holdermovable between said feed-race and stamping-chamber, actuating mechanismderiving its movements from the plunger and automatically controllingthe motion and position of the blank-holder, a starting device, and adischarging member for the blank-holder with actuating devices thereforcontrolling said starting device, whereby the placing of the blankinaugurates the motion of the stamping mechanism, recharges theblank-holder and returns the latter to position; substantially asdescribed.

.17. In a stamping-machine the combination with a plunger or die and itsopposing se /me stamping chamber or member, of a transferrer movable ina path lying intermediate said die and chamber and provided with ablank-holder furnished with a pusher movable longitudinally thereof andadapted to insert the die in its chamber and to deliver a blank to thestamping-chamber as desired; substantially as described. I

18. In a blank-transferrer for stamping-machines and the like, thecombination with a reciprocating blank holder provided withblank-retaining devices, of a double-acting pusher for expelling theblank and inserting the die; substantially as described.

19. In a stamping-machine the combination with an open stamping orcompression chamber, a plunger opposite said chamber, and a die carriedby said plunger, of a transferrer provided with a blank-holder movablelaterally of the plunger between the die and the stamping-chamber andprovided With a channel parallel with the path of the die, and a pushermovable in said channel to discharge from eitherend thereof;substantially as described.

20. In a stamping-machine the combination with the die and thestamping-chamber, of a transferrer movable laterally of the die betweenthe latter and the stamping-chamber and provided with a blank or diesupporting channel, a pusher movable in said channel for dischargingfrom either end thereof, actuating devices for said pusher, andcontrolling devices for adjusting the position of the pusher and therebydetermining from which end of the channel it shall discharge;substantially as described.

FRANK HINMAN PIERPCNT.

Witnesses:

W. J. ROGERS, R. R. WILSON.

